When did the Chicxulub impact event that extinguished non-avian dinosaurs occur?
Answer
66 million years ago
The colossal impact event that caused the Cretaceous–Paleogene extinction is documented as having taken place 66 million years in the past.
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When did the Chicxulub impact event that extinguished non-avian dinosaurs occur?What is the estimated size range across of the impactor that struck the Earth?What is the estimated diameter of the resulting Chicxulub crater structure?What major geological boundary is the Chicxulub impact inextricably linked to?What factor has primarily conspired to hide the vast majority of the resulting impact cavity from casual view?Where is the Chicxulub impact structure primarily situated today?What shape resulted from the massive collapse of the initial cavity shortly after the impact?Which advanced geophysical techniques are used by researchers to map the buried subsurface structure?What type of direct physical evidence found in drilled wells confirms the violence of the impact?How does the buried crater influence modern gravity maps?Where is the modern town of Chicxulub geographically situated relative to the impact structure?Why is the impact structure not comparable to the exposed Meteor Crater in Arizona?